Type-writing machine.



C. B. YAW.

TYPE WRITING MACHINE.

APPLlCATlON mm wuss. 191s.

Patented Sept. 19, 1916,

3 SHEETS-SHEET I INVENTUR WITNESEES:

HIEATTQRNEY C. B. YAW.

TYPE WRITING MACHINE. APPLICATION men JUNE 9. 191a.

Patented Sept. 19, 1916.

3 SHEETSSHEET 2.

IIIIIIIII: IE

WITNEEEIEE]:

INVENTOR= HI'EIATTDRNEY C. B. YAW.

TYPE WRITING MACHINE.

APPLICATION FILED JUNE 9. 1916.

Patented Sept. 19, 1916.

3 SHEETSSHEET 3.

WITNEEEH-li INVENTUR;

QV/ "M HISATTEIRNEY ward by a. spring; Liana". ii \m Y-i "controlled by escapemcnt CLIO B. YAW, 0E ALRILX'EI;

COMPANY. OP 1' LI mm "m figiecificatien of Letters Patent.

Application filed Jane 9, 1916. Serial Nofifififilfli.

To all whmn it man r au al-n liiit lcnmvn tint l, i) ii. YAW, ciii'nrn of the Vnitccl States. an i Mien! oi Ailing ton, in the count; 1 f liwlnon and State of New Jersey. have kiwi-Ami certain now and useful Improve-mots in 'l; i *3. riting Film chines, of which fi'rrliowing" is a. spccxli cation.

My present. liner. meehanisin for type more j:-s} eci:ill' v to n el ling the vibratory mm and for feeding it, and the of the invention are to y i; vices of the clnirzictcr an i To the above and othe 5 my inrenthin consists in the l'eaturw o'l' con 'rnction, com binations of device; ".nil 2UY21i3lii0lltr of parts hereinafter dew-fined {illil pzn-timilarlv pointed out in the tiitilli'i.

In the accoingnuri'ing llmwingg whiini illustrate the me'lerreel form of: my inven tion, Figure l is a fragmentary front to rear vertical SQCtlUlEill view if trpewriting ma chine embodying: my .iEkVl'fiili-lllh Fig. in :2 fragmentary n .z QlQ ZE i FE gmrir in iiection of said machine. bags. 71 and, '11 are (lei.-.iil.'-- of a ribbon in l(.} spool. Fig. 5 is ii fragmentary ii nt .rwation of the upper part of said machine. Fig. 6 in a fragmentary perspective View showing parts of the ribbon vibrating and controliing mechanism. Figs. 7 and 8 are details of the ribbon reversing mechanism.

Referring to Figs. 1., frame of the machine, comprising a base portion. 1 and uprights 2 which support a. top plate 3, has at its rear 2. fixed trnnkway 4 which cooperates through antitricti0n hulls with the slide. ldii (i of t! carriage, which 'furthrr coin iaes; end bar '5 that pivotally Support 2x platen frame 8 ml which is mounted n cylindrical. platen, 9. The. carriage and platen are. constantly urged leftis mncrited to the carriage by a toot} Wheel 1]. that turns with the lg drum and meshes with a rack bar 1'23 on t" e sliile hm 5. Step-b1?" step left ward TDUWEZHQHtS of the carriage are devices co1nprising a pinion 13 that meshes with a. set of teeth on the rack bar 12, and "mounted on rcintes to r .i'mn 'itilfi! machines, :mzl i iullti'ih krifi'ilcfi of the ribbon iri n ipnl olijerts improved lit 2 and 5. the main a shaft 14 which carries at its lower end a' the printing :iml low preien: my Pill)? tiled fin; front $51 hearing itl r sazi; with :iry jMr-r 1i. 21.

one i WlWifl. 24 pro key stein henrii 1n frame. A 4 which -i the type. he te ms much is aup io ted 1...: H mm ziimft sown to opernte in xtnui rlllllilt o i'i ferringz next n; :i. n v i=irzirieinnzi.cs, ls w-nirni Hi l fl lll'i 31 (l i 's. l, 2 3 and ii. the cn 1- of the l iiiion being se cured to the core piece h; q-ring clips These core pieces lit over the upper ends of vertical n1; "l l whi in hearing; in the top plate and also in lugs or brackets 34, prnj w ing inward ii" in the sides of the hail-ac, said xiizlfi wing: .fiigml one at each side m" the m i hat forward the printing: tare of the platen, Near the ripper end of emit; slm'it 2 fixed a flange/4i collar 35 from which projects ngn'ard :1 W! ticni pin 3 tint migages with a hulaindicated at 8'] in, the 'c pieci: 1 i that the Matter forced to turn with its 3 almft @Underiying the co e piece 1; loo;

bottom piece 38 which also peril -'t the passer of ti; pin 36. of the ribbon are; 5n )portmi 38. During rotary tending;

and "r r m" 2 iii flange 38 i rns in the bottom o w U i 'or housing 3%) for the, wound portion? of the riblion, each cup being supported on short posts 40 rising from the. top plate. tom of the. cup is formed with a circular cut-- out indicated at 41 of slightly diameter 1" t Each cup isprovided or top 49 which fits into and frictionally engages the cup. The inner side of each cup is formed with a slot or cutaway 43 for the passage of the ribbon as it winds off and on the core pieces. These core pieces 31 together with the loose flanges 38 constitute ribbon carriers which are readily removable from their cups or housings. Fixed to the lower end of each shaft 33 is a beveled pinion 44 which is adapted to mesh with a corresponding beveled pinion 45, the pinion 45 being mounted on the horizontally disposed ribbon driving or power shaft 46, which takes bearings in the sides of the base and at the, right-hand side projects through the base and is provided with a turning handle 47. Thepower shaft carries an elongated pinion 48 which meshes.

with a spiral gear 49 fixedto the lower end of an'oblique shaft 50 that inclines upward and rearward, taking hearings in a sta-- tionary bracket 51. The upper end of the shaft 50 is provided with a pinion 52 which meshes with the toothed wheel 11 thus connecting the shaft 46 with the spring drum 10. Fixed to the shaft 50 is a ratchet wheel 53 which is engaged by a spring detent 54 that revents backward rotation of the shaft 50. he pinion 48 and the gear 49 are constantly in mesh but provision is made for turning the shaft 46 by the handle '47 without affecting the shaft 50, this being accomplished by mounting the pinion 48 loosely on the shaft 46 and providing one end of said pinion with a set of ratchet teeth 55 with which engages a corresponding ratchet 56 that is integral with a clutch member 57 slidably mounted on the shaft 46 and engaged by a .cotiperating clutch member 58 fixed to the shaft 46. The ratchets and 56 al e maintained engaged by a coiled spring 59 that is arranged between the ratchet and the hub portion of the clutch member 58. When the handle 47 is turned the shaft 46 will turn, this turning movementbeing transmitted through the clutch ,member 58 to the clutch member 57 whose ratchet 56 will click over the ratchet 55. When motion istransmitted in the opposite direction, however, from the shaft 50 to the shaft 46, the ratchet 55 will force the ratchet 56 to turn with it, thus forcing the shaft 46 to turn.

The driving pinions 45 are so disposed on the shaft 46 that only, one of said pinions at a time can cotiperate with its associate pinion 44 as is usual, and by shifting the shaft 46 endwise the pinions 45 may be alternately connected anddisconnec ted in turn, thus reversing the ribbon feed. During such shifting the elongated pinion 48 will always remain in engagement With the sp ral gear 49. The shafts 33 are preferably spring mounted, coiled springs 33 being interposed between the brackets 34 and the hub portions of the'pinions 44. These spr ngs tend constantly to press the shafts 33 downward and maintain the hub portions of the flange members 35 in contact with the top plate 3. The endwise shifting of the shaft 46 may be accomplished by hand through pushing or pulling on the handle 47, or else by automatic shifting or reversing devices next to be described. Said shaft is maintained in one or the other of its shift positions by detent' devices of ordinary construction inclosed in a hoiising 60 secured to the righthand side of the main frame.

The ribbon reversing mechanism comprises angular reversing members 61 ar ranged within slots cut in the upper ends of the shafts 33. Each reversing member is pivotally connected at 62 to the upper end of a rod 63 that is slidably mounted in a hole extending longitudinally through the shaft 33. The lower end of each rod is adapted to engage with an underlying worm 64 on the end portion of the shaft 46 to move said shaft endwise to reverse the ribbon. As hereinafter described the rods 63 may be alternately raised and lowered to effect this result. Each reversing member 61 comprises an upright arm 61 which is adapted to play in a slot 65 cut in the corepiece 31, the flange 68 also being notched at 66 to allow of such play. The horizontally disposed arm of the reversing member 61 terminates at one end in a toe portion 61 to contact with the flange 35, which acts as an abutment or fulcrum for the member 61. The opposite end of said horizontal portion terminates in a projection 61. Normally the upright arm 61 is confined within the slot 65 by the folds of the ribbon as shown in Fig. 2, and as a result the rod 63 is lifted so that its lower end is clear of its associate worm 64. .Vhen the ribbon has been completely unwound from. the core piece, however, the member 61 will swing out and down until it is arrested by the flange as shown in Fig. 7, causing a lowering of the rod 63 until it engages with the underlying worm, with the result that as turning movements of the shaft 46 continue, said shaft will be wormed along endwise, until the pinion 44 adjacent the lower rod 63 is engaged by the associate pinion 45, the pinion 45 at the opposite end of the shaft 46 being concurrently disengaged or rendered inoperative. As thereafter the shaft 33-and its lower rod 63 continue to turn the projection 61 will come in contact witha cam piece 67, Figs. and 6. screwed fast to the top plate in the path of said projection, with the result that the member 61 will be cammed or swung upward about the toe 61? as a center lifting the rod and restoring the upright portion 61 within the slot where it will be confined by the first ply of the winding-on ribbon. From what ha been said it is believed that it will be clear meaasoe that ilie direotion of feeding movement of the r bbon will be automatically reversed each time the ribhon is completely unwound from one of the earners and wound on the other rarrier.

Referring now to the mechanism for vihratii Y the rilibon at printing operation in the tielil changing mechanism for ...rolling the extent of such vibration so i v widthwise the printing portion 1n eagwsed to the types, which involves novel features, referv he had to Figs. 1, i and t}. in n go iron; one ribbon carrier to the other across the front of the platen and below the printing line thereon the ribbon threaded through a vibrator) ribhon can .rier or vibrator 68 which is preferably of sheet metal and comprises a vertically disposed head 69 provided with two diagonally arranged guide loops 70 terminating at their freeends in horizontally disposed portions 70. Said "ihrator further comprises a rear u'arcli v and downwardly extending stem portion 71. which passes through a cut-mil in the top plate 3 Across the cut-out and zilian'e the same rranged liridgze pieci':

iiieh attached to the upwardly ex 73 Lending; part of the top plate and serves on a stop for the vibrator in its movements to printing position. The rear end portion of the stem of the ibrator is secured by sex-ewe 7' to the inner end of a rock shaft 75.. the end portion of said shaft being cut oil to provide a list seat for the stem. the why 68 and the rock shaft 75 together eonst toting a single rigid member. The melt shaft bears in a tuhe 76 which extends lelh gunl hack of and slightly below the too )late and its; r wror left-hand end is driven mto or otherwis lined in a block or huh 'iieoe 77 which i also perforated to alford message for the rock shaft. which projects leftward thereihrough. Said bub-pieee in turn is fixed to the rear end of a rod or rock shaft 78. The rock shaft is arranged at right-angles to" the tube 76 and rook shaft.

75, its rear end portion just forward of the hub piece 77 bearing in a stationary bracket 79 depending from the top plate 3, While its forward end portion bears in a lug 80 de pending from the forward portion of the top plate near its left-hand side. The rook shaft 78 is adapted to be controlled by hand for purposes hereinafter explained and to that end is provided near its forward end with a orank arm 81, extending: horizontally.

le'fiward, the outer end portion 81 of said prank arm being bent forward at rightangles and passing through a notch or slot in the left-hand end portion of the front shield $2. The portion 81" is provided forward of said shield with a key or finger button 83 that has on it indicating marks.

For example. the upper and lower hai -se o said notion may he colored lo cox-re speclirely to the upper and hover and o of the ribbon ilifL' De 1 are provided for holding the crank and the parts that it eontrola in tions Said detent devires eompris" member pivoted to the front of i. arm ill at 85. The left-hand end oi said lever member is notched as llKliCneP-(i all Hi? to embrace the portion hi of the vrani: arm while the right hand arm of id member teri'ninatesv in a pointed or hem owl poring: 87. This pointed portion, eoilgzwrmes I the free end of a spring intent w properly shaped for such or. oration, he lower end of said detent being eerured oy screws 89 to a. lug 90 on the rear of the shield 25 The parts heretofore doavribed eonipris ing the tubular bearing 76, huh 3'7, roi-k shaft 78. crank arm. til, key and detent devices are provided for the purpose o1 ('on-- trolling? th normal nofiilion of the "vibrator 68 and its rook shall. 75 so as to vary the printing portion of the ribbon exposed to the types or in the present instance to present either the ribbon field a. or the ribbon field ZP opposite the printing point p of the platen In other words, they constitute ribbon, field-changing mechanism. In order to vibrate the ribbon at printing operation, connections are provided for rocking the shaft 75 by actuation of the printing keys. euid connections eompnsing a eranli arm 93 having: a hub 92 fixed to the rook shaft 75 euteirle the huh 77. The oranlt arm l tends horizontally forward and has pivot ally ronnerted to it the upper end of a link 3. said linlr tgxlenrliug vertirally dov n-- ward lll 'wl iriil'lg' curved forward at i ha e! end where it pivotally courier-ted at 9 to the free and of a. erank arm which lined in and extends horizontally firmware! from 'iliij. reel: shaft 559 near the leithand end thereof. The construction is such that when a printing key'ilfi is actuated and the shaft- 29 is rocked as heretofore explained, the crank :U'm 95 will thereby be swung upward raising the link 93 and swinging the cranl; arm 91 upward, roeking the shaft 75 in its hearing 76 and swinging the vibrator upward and rearward. This swinging movement of the vibrator carries it from a position somewhat forward of the platen and below the priming point to a position Where it will (-ontaet with the bridge '73 and present. iqwposit the printing point p the printing portion of the ribbon that extends between the two loops 70. When the parts a're powioned as illustrated in Figs. 1, 2 and this vibratory movement communicated to the vibrator by actuating devices will swing it so as to present the upper ribbon field. It,will be understood that dun this vibratory movement-of the ribbon,

"wowm the bearing 76 and the connections thereto comprising the rock shaft 7 S and crank arm 81 will not be atfected. These parts remain set in fixed position under control of the de- 5 tent devices 84 and 88. Vv'hen it is desired to dispense with the use of the upper field 'a and to switch to the ribbon field 1), or

lower field, the button 83 is pressed down from the full-line position shown in Figs. 2 l and 5 to the dotted line position shown in said figures, and this will have the effect of swinging down the crank arm 6i. and swing ing up the inner arm of the lever 84- so that its pointed end 87 will cooperate with the [5 the crank arm 81 in its lower position. The downward swing of the crank arm 81 will -correspondingly rock the shaft is which in turn will rock the hub 77 and swing the tubular bearing 76 upward about the axis of the rock shaft 78 as a. center, as indicated by dotted lines in Fig. 2. As a consequence the rock shaft 75 within said bearing 76 will be similarly swung upward about the axis of said rock shaft and the vibrator as at the inner free end of said rock shaft will be moved upward and rearward from the normal position shown in full lines in Fig. '1 to the normal position indicated by dotted lines in said figure. This change in the normal position of the vibrator and its controlling devices will not affect the vibrator actuating devices comprising the link 93 and crank arm 95. there being sutiicient loose ness at the' point of connection of the link 93 with th crank arm 91 to allow of this, the swinging movement of said crank arm 91 about the axis of the rock shaft 78 being comparatively slight. In this field-changing operation it will be observed that pal ts 76, 78 and 81 operate as a. single lever mom- )8! having an elongated fulcrum portion. In order positively to limit the swinging movements of the tube 76 stop devices are preferably provided for (:(Xiperation with the inner end portion of said tube, said stop devices comprising a bracket. 96 fixed t0 the rear portion of the top plate by screws 97 and provided with rearwardly extending lugs 98 and 99 spaced apart to allow sufficient play of the tube 76 which is arranged between them. The lower lug 98 provides a stop for the tube when it is in its lower position while to insure accuracy of ad i. ment the upper lug 99 is preferably pro. led with an adjustable screw stop 100 which arrests the tube when it is swung upward to raise the vibrato:- to its uppler normal position. The stop 73 limits v1 )ratory movements of the ribbon vibrator.

It will be observed that by my present invention I provide in combination with a ribbon vibrator, ribbon fieldchanging devices or mechanism which comprise a pivotal support for said vibrator, and means upper end of th spring detcnt 88 to hold for communicating pivotal movement to said support to change the normal position of said vibrator. in order to change the field of the ribbon that is presented to the types when the vibrator is actuated; that in the present instance the pivotal support is in the form of a tubular hearing, which is rigid on a rock shaft, that is key-controlled from the front of the machine by a k y that is rigid with said rocli' shaft, said rock shaft being mounted on an arm that extends radially therefrom, said tubular bearing also projecting rearward from said rock s raft; that the ribbon vibrator is rigidly connccted to a pivotal device or rock shaft which akes hearings in: said tubular bearing; that the ribbon vibrating devices in the present instance comprise a vibrator proper and a rock shaft on which said vibrator is fixed; that said rock shaft bears in a tube which 35 is rigid on the second rock shaft; that the second rock sha it remains quiescent when the first rock shaft is rocked to move the vibrator to and from the printing point; that said first rock shaft does not rock on its own axis when the ribbon field is charged but does turn about a center which is coincident with the axis of said second rock shaft, in other words the rock shaft is moved pivotally about an axis which is at an angle to the pivotal axis of the rock shaft itself; and that the first rock shaft has .one arm fixed to it, 5.6., the vibrator proper which carries the ribbon, and another arm fixed to it which is connected tovibrating devices operative from the printing keys.

My present invention provides for an exceedingly simple and effectiveribbon fieldchanging mechanism, the partsbeing few and not liable to get out of order and the construction being such that the chance of overthrow is minimized.

Various changes may be made without departing from my inventiom IV hat I claim as new and desire to secure by Letters Patent, is g 1. In a typewriting machine, the combination of a ribbon vibrator, a pivotal device to which said vibrator is rigidly connected, means for moving said pivotal device predetermined extents to change the normal position of said vibrator, and means connected to said pivotal device for vibrating said vibrator, the last recited means remaining quiescent when the change in normal position of the vibrator takes place. In a typewriting machine, the combination of a ribbon vibrator, a pivotal device on which said vibrator is mounted, 'ahbearz ing in which said pivotal device bears, means 125 for moving said bearing to change the normal position of said vibrator, and vibrating means connected to said vibrator.

3. In a typewriting'gnachine, the combination of a ribbon vibrator, a pivotal de- 130 vice bears, vibrating devices connected to the other end of said pivotal device, and means for moving said'bearingto change the normal position of said vibrator, the vibrating devices remaining quiescent when said means is operated. v

5'." In a'typew'riting machine, the'combinationof a ribbon vibrator, a pivotal device to which said vibrator is connected, means for communicating pivotal movement to said device at an angle to its own pivotal axis, and. means for communicating pivotal movement to said device about its own pivotal axis as a center.

6. In a typewriting machine, the combination of a ribbon vibrator, a pivotal device to which said vibrator is connected, means for communicating pivotal movement to said device at" an angle to its own pivotal axis,- and means for communicating pivotal movement to said device about its own pivotal axis asa center, both said means being hand controlled independently of each other,

7. In a typewriting machine, the combination of a ribbon vibrator, a pivotal device to which said vibrator .is connected, means for communicating pivotal movement to said deviceat an angle to itS'OWn pivotal axis, and means for communicating pivotal movement to said device about-its own pivotal axis as a centeiy one of said means op eratin to change the normal positionof' the vi rator, and the other of'said means operating to vibrate said vibrator at printing operation. I

8. In atypewriting machine, the combination of a ribbon vibratorga rock shaft by which said vibrator is supported, means for rocking said shaft, a hearing for shaft,

and meansfor moving said bearing to determined positions to vary the normal po sition of said v brator.

9. In ribbon mechanism for typewriting machines, the comb nation of roczc shaft,

an arm fixed thereto and carrying the rib-e bon, another arm fixed to said rockfshaft,

vibrating devices connected tosaid fother arm, and means for changing the normal position of said rock shaft, r

1%. In ribbon mechanism for typewriting machines, the combination of rockshaft,

an arm thereto and carrying the ri b,

bon, EHO'tizG! 311362185110 said rock shaft, vibrating devices connected to said other arm, aitubniar bearing in which said rock shaft bears, and means for moving said bean:

ing predetermined extents. 11. In ribbon mechanism for typewriting machines, the combinationflof a rock" shaft, an arm fixed thereto and carrying the rib:

' bon, another arm fixed to said rock shaft,

vibrating devices connected to said other arm, a tubular bearing in which said rock shaft bears, and a second rock shaft by which said tubular "bearing is supported.

12. In ribb mechanism for typewriting machines, the combination of a rock shaft,

an arm fixed thereto'and carrying the ribbon, another arm fixed to. said rock shaft,

vibrating devices connected to said other arm, a tubular bearing in which said rock shaft bears,- and a second rock .shaftby which said tubular bearing is supported, hand controlled means forlmoving said second rock shaft predetermined extents, and

which said bearingiis supported, means for detent devices for maintaining said second actuating said second rock-shaft, and means for actuating said firstrecited rocksh'aft.

' 14. In a typewritih'g machine, the combiwhich said vibrator is supported," a bearing actuating said-secondrock, shaft, means.

of each "other;

for said rock shaftfafsec ond roclgishaftby which said bearingisv supported, mansi n. 7;

1,100 'for actuating'saidfirstfrecitedfgrock shaft,

both means {being operated independently" 15. In a t writing :niachine,"thecombis nation of a ribbon-\-'ibrator,a' pivotalflsupport therefor, means formclommunicatlng' pivotal movement to said supporttochange the normai'position of said. vibrator, stop 1 devices for iimiting thc pivot-ahmovement's of said support, detentdevices'iorvmaintaining said support-inset positions, andmeans for actuating said vibrator atv printing oporation. 1

- 16. In a typewritin'g'Inachin,'the combi-..

nation of a ribbon vibratorpapivotal {device on which said vibrator'is mounted, a bearmg in which said pivotal device bears,

means for moving-said bearing to change the normai position of-said vibrator, stops for hunting the movements of said bearing,

etent devices maintaining said bearing inset positions, and v brating :means con-' nation of aribbon ,vibrator,-- ajrockvshaft by r pivoted to said crank arm and provided with means for limiting its pivotal movement thereon, and comprising also a spring detent with which said lever member co-.

operates.

18. In a front-strike typewriting machine, the combination of a platen, a ribbon vibrator, a rock shaft withwvhich said vibrator is connected, said rock shaft extending lengthwise of the platen, a bearing for said rock shaft, a second rock shaft to which said 'ofa key controlled rock'shaft, a bearing rigid therewith, and aribbon vibrating device mounted in said bearing.

20. In ribbon field-changing mechanism for typewriting machines, the combination of a key controlled rock shaft, a tubular bearing fixed to said rock shaft at substantially right-angles thereto, and a ribbon vibrating device in said bearing.

21. In ribbon field-changing mechanism for typewriting niahines, the combination of a rock shaft, a key rigidly connected to said rock shaft and projecting radiall therefrom, a bearing rigid with said rock shaft and projecting radially therefrom, and a ribbon vibrating device in said bearmg. I

22. In a typewriting machine, the combination of a vibrator, a swinging support therefor, stops for said support, and a stop for said vibrator. u Signed at the borough of Manhattan, city of New York, in the county of New York and State of New York this 8th day of June, A. D. 1916.

CLIO B. YAW.

Witnesses:

CHARLES E. SMmH, E. M. Wars. 

